1. Axes, in a way
6. A chip, maybe
10. Part of a nuclear arsenal, for short
14. All thumbs
15. Close, as an envelope
16. Container weight
17. Treat equitably (with "give")
19. Boat with an open hold
20. Tabby's mate
21. Gun, as an engine
22. Catch
23. Exec's accessory
25. Upgrades a factory
27. Unforeseen difficulties
32. After expenses
33. Crossword buffalo
34. Brio
36. Big dos
40. Cartoon bear
41. Begets
43. Bang-up
44. Wolf down
46. Old German duchy name
47. Inspiration
48. That guy
50. Mythical Artemis or Atalanta, e.g.
52. Crook
56. Fifth note of a musical scale (var.)
57. Eastern royal
58. A Kennedy
60. Second shot
65. Biology lab supply
66. Women
68. Quiet
69. Certain priest of the East
70. Angler's gear
71. Plant a lawn
72. Black, in poetry
73. Hot dogs & hamburgers